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A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

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Old 04-14-2002, 06:24 PM   #1
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Default Removing/cleaning your throttle body on the 1.8T--> FAQ w/pics.

1. Remove the electrical connector on the top of the throttle body (red shaded area).

2. Remove the cruise control connection (yellow shaded area). There's a small clip holding the ball in the socket; remove the clip, then free the ball from the socket.



3. Fish out the throttle cable from the plastic housing, as shown by the purple dots.



4. Remove the four (4) 5mm hex bolts holding the TB to the manifold. You can't see one of them in the picture, but the general position is marked with a green arrow.



5. Clean it with TB cleaner.



Before:


After:


6. Put it all back together, using a new gasket if possible.


Did it do much? Not really. It wasn't terribly dirty to start, but I figured I'd rule it out as a possible cause of my dipping idle. Doesn't appear that the 1.8T has an idle air control valve, as found on the 2.8s. Instead, there's this mechanism on the opposite side of the throttle cable, that is no doubt computer controlled to adjust the idle as necessary.

As soon as I opened it up, I closed it :-)


Wheeeeeeeeeeeeeeee.....WOT:



That's it. Pretty simple, but I figured I'd put this up as reference if anyone needed to R&R their TB for some reason. Good luck

Andy
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Old 04-14-2002, 06:29 PM   #2
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Default LOL ;) "As soon as I opened it up, I closed it"

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Old 04-14-2002, 06:36 PM   #3
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Default Hehe.

It was just waiting to be broken! Everything looked good and clean, so I closed that biatch up quick!

Andy
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Old 04-14-2002, 06:53 PM   #4
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Default Been waiting for this one - thanks Andy!

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Old 04-14-2002, 06:57 PM   #5
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Default Seriously?

I didn't figure many people would need this, but since I was doing it I figured might as well whip up a little step-by-step. You're approaching a timing belt change, eh? Doing it yourself or taking it to a shop?
Have fun!

Andy
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Old 04-14-2002, 06:58 PM   #6
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Default Don't forget to do a TBA.

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Old 04-14-2002, 07:12 PM   #7
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Default Throttle body adjustment?

Yeah I think that took care of itself, when I disconnected the electrical connection to the TB. I noticed when I started it back up that the revs stayed high and took a while to settle down to 8-900rpm. Still did it when I took it for a quick drive. Are those the typical "symptoms"? I think I'll have access to a VAG tool tomorrow, can reset it that way right? Thanks

Andy
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Old 04-14-2002, 07:17 PM   #8
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Default Re: Throttle body adjustment?

Yeah, the best way is with the VAG I believe, just like pulling the ecu I guess..

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Old 04-14-2002, 07:22 PM   #9
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Default K. Will try it tomorrow.

Thanks.

Andy
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Old 04-14-2002, 07:34 PM   #10
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Default Ya I never really looked at the hardware, but intended to do it.........

along with the fuel filter.

Ya- Motopersona is doing my Timing Belt and EFK, and perhaps a few other small things such as the fuel filter.
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Old 04-14-2002, 07:34 PM
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18, 18t, a4, adjustment, audi, b6, body, clean, cleaning, exterior, picture, remove, reset, throttle, tottle, turbo


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